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CVE-2011-4350

38
FAUCET Score

CVE-2011-4350 describes a directory traversal vulnerability in Yaws 1.91, affecting Debian Linux distributions. An authenticated attacker can exploit this flaw by crafting a malicious URL to access arbitrary local files on the server. With a CVSS score of 6.5 (Medium), this vulnerability has a low attack complexity and high confidentiality impact, allowing unauthorized information disclosure. While not listed on CISA's KEV catalog, a Metasploit module exists for this vulnerability, indicating readily available exploit code. Despite this, there is no evidence of active exploitation, nor significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
1.91CPE matchmatch criteria
cpe:2.3:a:yaws:yaws:1.91:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
16.14%
Probability of exploitation in next 30 days
EPSS Percentile
96.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
Metasploit: Yaws Web Server Directory Traversal · Nov 25, 2011
This CVE's current EPSS score of 0.1614 is in the 99th percentile among its peer group of 21,939 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

access.redhat.com / security/cve/cve-2011-4350
Broken Link
bugs.debian.org / cgi-bin/bugreport.cgi
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
ExploitIssue TrackingThird Party Advisory
security-tracker.debian.org / tracker/CVE-2011-4350
Third Party Advisory
openwall.com / lists/oss-security/2011/11/25/7
Mailing ListThird Party Advisory